Gallery | IAAF WORLD CHAMPIONSHIP 2015 Day 9 | China Athletics Worlds

Jamaica's men's 4x100m relay gold medalists from left, Nesta Carter, Asafa Powell, Nickel Ashmeade and Usain Bolt celebrate on the podium at the World Athletics Championships at the Bird's Nest stadium in Beijing, Sunday, Aug. 30, 2015. (AP Photo/Kin Cheung)

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